Here’s a FireX FXW-1. It’s odd how the box says “FXW-1A”:
What is the difference between the FXW-1/1A and the FX1020? NLind’s FXW-1 uses a different sensor than the FX1020, and the test button mechanism is different. This one looks like it has the same sensor as the FX1020 though. Other than that, was there any real difference between them?
Here’s a Smoke Signal SS-200 from 1976:
Yep, Willbill808 has a FXW-1A. you can see his video on youtube. The SS-200 was a relist, originally the price was higher but the seller decided to cut the price. It’s still a little too expensive though 
Also, I bought one of the SA120’s, and it came today! Here’s the unboxing and testing:
Rectangular TC-49A. I have one I got at an auction and they thought it was a doorbell.
Also the SS200 was again relisted and the price lowered.
Nice vid! Thanks for sharing 
Here’s a Sears 957358 smoke alarm:
Does that Sears alarm have a squealer or a piezo horn? Looks like it could be from the very early 1980s.
I’m pretty sure it has a piezo. I think it’s a Gateway Scientific rebrand
http://www.ebay.com/itm/PYROTECTOR-SMOKE-AND-HEAT-DETECTOR-120V-P-N-30-290-9-/151761980390?hash=item2355b80be6
Pyrotronics AC alarm w/ test button and heat/thermal. I have one w/o. Mine Makes a loud DC buzz with 120Hz modulation, like how the one in https://youtu.be/C5QkOJqg7n4?list=PL91B9B77C5AEC2F6A&t=462 this one starts out.
http://www.ebay.com/itm/Gulf-Gas-Station-Smoke-Detector-1960s-Gulf-Coast-/201397060137?hash=item2ee4334229
I might go for this, but maybe not. Gulf Oil supposed smoke made by General Telecom.
FYI the 79DCRI smoke detector:
This detector is used for Operating a Solenoid that will drop a louver in a ventilation system.
When the 9 volt powered Smoke Detector goes off it sends 2-3 amps of power to a solenoid that heats up enough to melt solder. There is a soldered clip on the solenoid that is released when the solder heats up when the clip drops the louver falls shut by gravity.
When this unit goes off you have to solder the clip back on the solenoid to operate the louver once again.
The louver acts as a ground to complete the circuit. thats how it works and that is why there are extra wires on the smoke detector.
Kind of cool a 9 volt battery can power this up but it works well.
willbill808
I am hoping you could help me out as it appears you have great knowledge in Smoke Detectors.
I need 60 BRK 79D CRI units . I need battery operated units.
These 79D CRI 9 volt units have a pigtail that operates some sort of solenoid that heats up when alarm goes off and Solder is melted and a clip separates from the solenoid and a louver drops by gravity.
I understand how it works but my problem is I cant find a replacement for this model, The replacement is 120 volt operated model and I still need a 9 volt model. Do you have a suggestion for me ?
Thanks Mark 313-740-0183
I don’t know about the 79DCRI, I know it has the same cover and base as the SmokeSignal SS-700
Also that Sears on ebay that Simplex4Life posted the link to was actually a Probe 101 rebrand, not a Gateway rebrand. You can tell that it has the same mounting bracket and the same basic shape as the Probe. I wonder if it’s labeled Southwest Laboratories too.
Actually, you’re right benson41011. That is a Probe rebrand, now that I look at it again. It was relisted:
The Smoke Signal SS-200 was also relisted, and it’s a bit cheaper now:
Yeah I noticed that the SS-200 was yet again relisted, seems like they lower the price each time it’s relisted.
Also, I got this Gillette Capt. Kelly 929 12.6 volt detector for my birthday yesterday! I was able to test it with a regular 9 volt battery.
Old Amway E-8375 alarm that uses Statitrol SmokeGard 800A’s circuitry.
BRK 769ACI (although it says 769ACII-2E620 on the box). 10 Available.
Here’s a FireX FX1014:
http://www.ebay.com/itm/Firex-FX-1014-Old-Smoke-Detector-/181852925104?hash=item2a57476cb0
Here’s an interesting one. It’s a Lutron Sniffer model S102 smoke alarm:
I was about to post the link to that FX1014, I noticed some interesting features on it. First, it has red labeling which is weird since most had green labeling. Also it has a wiring plug which most others had dual pigtail wires coming out of them, and it doesn’t have interconnect. This one must be a later one